//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by FernFlower decompiler)
//

package com.newlink.mqtt.mqttv5.org.apache.commons.codec.binary;

import com.newlink.mqtt.mqttv5.org.apache.commons.codec.base.BinaryDecoder;
import com.newlink.mqtt.mqttv5.org.apache.commons.codec.base.BinaryEncoder;
import com.newlink.mqtt.mqttv5.org.apache.commons.codec.base.Charsets;
import com.newlink.mqtt.mqttv5.org.apache.commons.codec.base.DecoderException;
import com.newlink.mqtt.mqttv5.org.apache.commons.codec.base.EncoderException;


import java.nio.ByteBuffer;
import java.nio.charset.Charset;

public class Hex implements BinaryEncoder, BinaryDecoder {
    public static final Charset DEFAULT_CHARSET;
    public static final String DEFAULT_CHARSET_NAME = "UTF-8";
    private static final char[] DIGITS_LOWER;
    private static final char[] DIGITS_UPPER;
    private final Charset charset;

    public static byte[] decodeHex(String data) throws DecoderException {
        return decodeHex(data.toCharArray());
    }

    public static byte[] decodeHex(char[] data) throws DecoderException {
        int len = data.length;
        if ((len & 1) != 0) {
            throw new DecoderException("Odd number of characters.");
        } else {
            byte[] out = new byte[len >> 1];
            int i = 0;

            for (int j = 0; j < len; ++i) {
                int f = toDigit(data[j], j) << 4;
                ++j;
                f |= toDigit(data[j], j);
                ++j;
                out[i] = (byte) (f & 255);
            }

            return out;
        }
    }

    public static char[] encodeHex(byte[] data) {
        return encodeHex(data, true);
    }

    public static char[] encodeHex(ByteBuffer data) {
        return encodeHex(data, true);
    }

    public static char[] encodeHex(byte[] data, boolean toLowerCase) {
        return encodeHex(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
    }

    public static char[] encodeHex(ByteBuffer data, boolean toLowerCase) {
        return encodeHex(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
    }

    protected static char[] encodeHex(byte[] data, char[] toDigits) {
        int l = data.length;
        char[] out = new char[l << 1];
        int i = 0;

        for (int var5 = 0; i < l; ++i) {
            out[var5++] = toDigits[(240 & data[i]) >>> 4];
            out[var5++] = toDigits[15 & data[i]];
        }

        return out;
    }

    protected static char[] encodeHex(ByteBuffer data, char[] toDigits) {
        return encodeHex(data.array(), toDigits);
    }

    public static String encodeHexString(byte[] data) {
        return new String(encodeHex(data));
    }

    public static String encodeHexString(byte[] data, boolean toLowerCase) {
        return new String(encodeHex(data, toLowerCase));
    }

    public static String encodeHexString(ByteBuffer data) {
        return new String(encodeHex(data));
    }

    public static String encodeHexString(ByteBuffer data, boolean toLowerCase) {
        return new String(encodeHex(data, toLowerCase));
    }

    protected static int toDigit(char ch, int index) throws DecoderException {
        int digit = Character.digit(ch, 16);
        if (digit == -1) {
            throw new DecoderException("Illegal hexadecimal character " + ch + " at index " + index);
        } else {
            return digit;
        }
    }

    public Hex() {
        this.charset = DEFAULT_CHARSET;
    }

    public Hex(Charset charset) {
        this.charset = charset;
    }

    public Hex(String charsetName) {
        this(Charset.forName(charsetName));
    }

    public byte[] decode(byte[] array) throws DecoderException {
        return decodeHex((new String(array, this.getCharset())).toCharArray());
    }

    public byte[] decode(ByteBuffer buffer) throws DecoderException {
        return decodeHex((new String(buffer.array(), this.getCharset())).toCharArray());
    }

    public Object decode(Object object) throws DecoderException {
        if (object instanceof String) {
            return this.decode((Object) ((String) object).toCharArray());
        } else if (object instanceof byte[]) {
            return this.decode((byte[]) ((byte[]) object));
        } else if (object instanceof ByteBuffer) {
            return this.decode((ByteBuffer) object);
        } else {
            try {
                return decodeHex((char[]) ((char[]) object));
            } catch (ClassCastException var3) {
                throw new DecoderException(var3.getMessage(), var3);
            }
        }
    }

    public byte[] encode(byte[] array) {
        return encodeHexString(array).getBytes(this.getCharset());
    }

    public byte[] encode(ByteBuffer array) {
        return encodeHexString(array).getBytes(this.getCharset());
    }

    public Object encode(Object object) throws EncoderException {
        byte[] byteArray;
        if (object instanceof String) {
            byteArray = ((String) object).getBytes(this.getCharset());
        } else if (object instanceof ByteBuffer) {
            byteArray = ((ByteBuffer) object).array();
        } else {
            try {
                byteArray = (byte[]) ((byte[]) object);
            } catch (ClassCastException var4) {
                throw new EncoderException(var4.getMessage(), var4);
            }
        }

        return encodeHex(byteArray);
    }

    public Charset getCharset() {
        return this.charset;
    }

    public String getCharsetName() {
        return this.charset.name();
    }

    public String toString() {
        return super.toString() + "[charsetName=" + this.charset + "]";
    }

    static {
        DEFAULT_CHARSET = Charsets.UTF_8;
        DIGITS_LOWER = new char[]{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
        DIGITS_UPPER = new char[]{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
    }
}
